PROCEDIMENTO DI TIPO MIGLIORATO PER LA PRODUZIONE DI MATERIALE ESPANSO A BASE DI POLIMERI SULFONICI

PROCEDIMENTO DI TIPO MIGLIORATO PER LA PRODUZIONE DI MATERIALE ESPANSO A BASE DI POLIMERI SULFONICI

A process for the production of expanded material based on sulfone polymers includes an extrusion step in an extruder of virgin sulfone polymer with the injection of at least one expanding agent and in the presence of at least one nucleating agent, and a recycling step of part of the expanded materi...

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Bibliographische Detailangaben
Hauptverfasser: Shelton, Robert Wayne, Bressan, Raffaela, Jeckson, Stephen Leonard, Aliperta, Luigi
Format: Patent
Sprache:ita
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:A process for the production of expanded material based on sulfone polymers includes an extrusion step in an extruder of virgin sulfone polymer with the injection of at least one expanding agent and in the presence of at least one nucleating agent, and a recycling step of part of the expanded material, which provides a recycled product used as raw material fed to the extruder in combination with the virgin sulfone polymer.